2007-12-14 11:36:13 · 6 answers · asked by Anonymous in Consumer Electronics ➔ TVs
Contrast ratio is kind of a meaningless specification, because there's no industry-wide standard as to how you measure it.
The two basic types of contrast ratio are dynamic CR and static CR. With dynamic CR, they take a TV and display a completely black image on it, and then measure the amount of light coming out of the screen. They then put on a full white image and measure the amount of light coming out of the screen. They then calculate the ratio of max brighness to min darkness.
With static CR, they display an image that is a 16-square checkerboard of alternating white and black squares. They then measure the light coming from a light area and compare that with the amount of light coming from a dark area.
Typical static CRs end up being in the 1500 - 2000 : 1 range, while dynamic CRs are more in the 12,000 - 15,000 : 1 range.
Manufacturers say that the bigger the CR spec, the better the screen can display variations in grey tones, resulting in better color imaging. But, the human eye can only resolve a CR of about 800 : 1. So, any CR above 1000 : 1 is fine. And, the human eye wouldn't be able to resolve the difference between two contrast ratios above that value, anyway.
That would be like having speakers that go up to 25 kHz, when the upper limit of human hearing is only 20kHz. There's no meaning to that spec, because you can't hear it, anyway.
2007-12-14 11:53:56 · answer #1 · answered by Paul in San Diego 7 · 2⤊ 1⤋
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The higher the contrast ratio the better the information will appear against a darker background. Tv's with higher contrast ratios have better picture quality and display black better than tv's with lower contrast ratios. Samsung makes some of the best LCD tvs on the market .
2016-04-01 04:24:46 · answer #2 · answered by ? 4 · 0⤊ 0⤋
The higher the contrast ratio, the better, 5000:1
2007-12-14 11:44:10 · answer #3 · answered by Anonymous · 1⤊ 1⤋
The higher the ratio the better, but there is no standard to determine it. Manufacturers may have individual criteria to determine the ratio; plus, other factors influence the picture you see, of course.
In addition, there is a standard contrast for still pictures versus one for dynamic view, the latter being the more important indicator. In the end, the best thing to do is to try to view many sets in an environment similar to the one you will have (i.e. dark, bright room).
2007-12-14 11:47:53 · answer #4 · answered by mapleleaf 2 · 1⤊ 1⤋
the more the pixels the better. so 5000:1 is better than 1200:1. Now there are even TV's having 25000:1.
But it also depends on the size of the TV. A 25000:1 Tv wont be very effective if you are going to have a TV less than 32". Also it depends on how close you watch the TV from.
If you sit close to the TV then you tend to see pixels, so you will need a lot of pixels for smoother picture. But if you are going to sit at a considerable distance, then it is not necessary to have high pixel ratio.
2007-12-14 11:46:05 · answer #5 · answered by shadow 2 · 0⤊ 3⤋
5000:1 is the mega pixeys the more the mega pixeys the better the picture.
2007-12-14 11:41:49 · answer #6 · answered by Anonymous · 0⤊ 3⤋